"""
Case Type   : 资源池化
Case Name   : 缩容单个备机，缩容后，备机节点上执行卸载数据库
Create At   : 2024.10
Owner       : chen
Description :
    1.执行缩容备二
    gs_dropnode -U USER -G GROUP -h hostlist
    2.缩容完成后，在备二节点执行卸载数据库
    gs_uninstall --delete-data
    3.恢复环境
Expect      :
    1.执行成功
    2.卸载成功
    3.恢复成功
"""

import os
import unittest
from testcase.utils.Logger import Logger
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from yat.test import Node
from yat.test import macro

class SharedStorage(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_comsh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.pri_node = Node('PrimaryDbUser')
        self.pri_root_node = Node('PrimaryRoot')
        self.sta2_node = Node('Standby2DbUser')
        self.db_host = self.sta2_node.db_host
        self.s_user = self.pri_node.ssh_user

    def test_shared_storage(self):
        text = f'''-----step1: 执行缩容备二 expect: 执行成功-----'''
        self.log.info(text)
        cmd = f'''source {macro.DB_ENV_PATH};
        expect <<EOF
        set timeout 600
        spawn gs_dropnode -U {self.s_user} -G {self.s_user} \
            -h {self.db_host}
        expect "*drop the target node (yes/no)?*"
        send "yes\\n"
        expect eof\n''' + '''EOF'''
        self.log.info(cmd)
        res = self.pri_node.sh(cmd).result()
        self.log.info(res)
        self.assertIn('[gs_dropnode] Success to drop the target nodes', res)

        text = f'''-----step2: 缩容完成后，在备二节点执行卸载数据库 expect: 卸载成功-----'''
        self.log.info(text)
        cmd = f'source {macro.DB_ENV_PATH}; gs_uninstall --delete-data'
        self.log.info(cmd)
        res = self.sta2_node.sh(cmd).result()
        self.log.info(res)

    def tearDown(self):
        text = f'''-----step3: 恢复环境 expect: 成功-----'''
        self.log.info(text)
        xml_path = macro.DB_XML_PATH
        cmd = f'''gs_expansion -U {self.s_user} -G \
            {self.s_user} -X {xml_path} -h {self.db_host}'''
        execute_cmd = f'''source {macro.DB_ENV_PATH};
        expect <<EOF
        set timeout 300
        spawn {cmd}
        expect "*assword*:"
        send "{self.pri_root_node.ssh_password}\\n"
        expect "*assword*:"
        send "{self.pri_root_node.ssh_password}\\n"
        expect "*lease repeat for database*:"
        send "{macro.GAUSSDB_INIT_USER_PASSWD}\\n"
        expect eof\n''' + '''EOF'''
        self.log.info(execute_cmd)
        res = self.pri_root_node.sh(execute_cmd).result()
        self.log.info(res)
        self.assertIn(f'{self.db_host}:\tSuccess', res)
        self.log.info(f'-----{os.path.basename(__file__)} end-----')